“

The non-invasive nature of this approach makes it particularly valuable for observing vulnerable or endangered species as well as those in hard-to-reach environments, such as caves and burrows. They do not have to be visible for us to know they are in the area if we can pick up traces of their DNA, literally out of thin air, air sampling could revolutionise terrestrial biomonitoring and provide new opportunities to track the composition of animal communities as well as detect invasion of non-native species.